JP2008151727A - Rotation speed detector and wheel bearing device with the detector - Google Patents

Rotation speed detector and wheel bearing device with the detector Download PDF

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Publication number
JP2008151727A
JP2008151727A JP2006342203A JP2006342203A JP2008151727A JP 2008151727 A JP2008151727 A JP 2008151727A JP 2006342203 A JP2006342203 A JP 2006342203A JP 2006342203 A JP2006342203 A JP 2006342203A JP 2008151727 A JP2008151727 A JP 2008151727A
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Japan
Prior art keywords
ring
encoder
wheel
rotation speed
fitting
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Pending
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JP2006342203A
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Japanese (ja)
Inventor
Yuushiro Ono
祐志郎 小野
Hiroshi Kawamura
浩志 河村
Kikuo Fukada
貴久夫 深田
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NTN Corp
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NTN Corp
NTN Toyo Bearing Co Ltd
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Priority to JP2006342203A priority Critical patent/JP2008151727A/en
Priority to CNA2007800470452A priority patent/CN101589312A/en
Priority to PCT/JP2007/001423 priority patent/WO2008075464A1/en
Priority to DE112007003123T priority patent/DE112007003123T5/en
Publication of JP2008151727A publication Critical patent/JP2008151727A/en
Priority to US12/486,883 priority patent/US7737682B2/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/443—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/02—Housings
    • G01P1/026—Housings for speed measuring devices, e.g. pulse generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotation speed detector which makes more precise air gap control, is free from a failure in airtightness, and improves reliability in detecting rotation speed of a wheel, and also to provide a wheel bearing device with the rotation speed detector. <P>SOLUTION: An annularly formed sensor holder 15 is mounted at an end of an external member 4, and consists of a fitting ring 16 and a resin-made holding part 17 coupled to the ring 16. A notch 14 notched in an approximate semicircle is formed approximately at the center of an outer peripheral surface of the holding part 17, causing part of a flange 16b which is a peripheral surface of the ring 16 to be exposed. When a fitting part 16a of the fitting ring 16 is pressure-fitted into and fixed to the external member 4, not only the part of the flange 16b of the ring 16 where the holding part 17 is not provided, but also the part of the flange 16b exposed by the notch 14 on the outer periphery of the holding part 17, can be pressed by a pressure-fitting jig. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、自動車等の車輪の回転速度を検出する回転速度検出装置、及び車輪を回転自在に支承すると共に、この回転速度検出装置が内蔵された回転速度検出装置付き車輪用軸受装置に関するものである。   The present invention relates to a rotational speed detection device that detects the rotational speed of a wheel of an automobile or the like, and a wheel bearing device with a rotational speed detection device that rotatably supports the wheel and incorporates the rotational speed detection device. is there.

自動車の車輪を懸架装置に対して回転自在に支承すると共に、アンチロックブレーキシステム（ＡＢＳ）を制御すべく車輪の回転速度を検出するために、回転速度検出装置が内蔵された回転速度検出装置付き車輪用軸受装置が一般的に知られている。従来、このような車輪用軸受装置は、転動体を介して転接する内方部材および外方部材の間にシール装置が設けられ、円周方向に磁極を交互に並べてなる磁気エンコーダを前記シール装置に一体化させると共に、磁気エンコーダと、この磁気エンコーダに対面配置され、車輪の回転に伴う磁気エンコーダの磁極変化を検出する回転速度センサとで回転速度検出装置が構成されている。   Rotation speed detection device with built-in rotation speed detection device to detect the rotation speed of the wheel to control the anti-lock brake system (ABS) while supporting the wheel of the automobile rotatably with the suspension system Wheel bearing devices are generally known. Conventionally, in such a wheel bearing device, a sealing device is provided between an inner member and an outer member that are in rolling contact with a rolling element, and a magnetic encoder in which magnetic poles are alternately arranged in a circumferential direction is provided as the sealing device. In addition, the rotational speed detecting device is constituted by a magnetic encoder and a rotational speed sensor that is arranged facing the magnetic encoder and detects a magnetic pole change of the magnetic encoder accompanying the rotation of the wheel.

前記回転速度センサは、懸架装置を構成するナックルに車輪用軸受装置が装着された後、当該ナックルに装着されているものが一般的である。しかし、この回転速度センサと磁気エンコーダとのエアギャップ調整作業の煩雑さを解消すると共に、よりコンパクト化を狙って最近では、回転速度センサをも軸受に内蔵した回転速度検出装置付き車輪用軸受装置が提案されている。   In general, the rotational speed sensor is attached to the knuckle after the wheel bearing device is attached to the knuckle constituting the suspension device. However, in order to eliminate the complexity of the air gap adjustment work between the rotation speed sensor and the magnetic encoder and to achieve further compactness, recently, a bearing apparatus for a wheel with a rotation speed detection device in which the rotation speed sensor is also incorporated in the bearing. Has been proposed.

特許文献１には、このような回転速度検出装置付き車輪用軸受装置の一例が示されている。この例では、内輪に外嵌されたエンコーダと、このエンコーダに対向して外方部材の端部に装着された円環状のセンサホルダと、このセンサホルダに一体モールドされ、エンコーダに所定の軸方向すきまを介して対峙する回転速度センサとを備えた回転速度検出装置付き車輪用軸受装置において、エンコーダが円環状をなす磁気エンコーダからなると共に、このエンコーダのインボード側にセンサホルダを介してシールが配設され、このシールがセンサホルダと内輪にそれぞれ装着され、互いに対向して配置された環状の第１および第２のシール板からなる。   Patent Document 1 discloses an example of such a wheel bearing device with a rotational speed detection device. In this example, an encoder fitted to the inner ring, an annular sensor holder mounted on the end of the outer member so as to face the encoder, and an integral mold on the sensor holder, and a predetermined axial direction on the encoder In a wheel bearing device with a rotational speed detection device provided with a rotational speed sensor opposed to each other through a clearance, the encoder comprises an annular magnetic encoder, and a seal is provided on the inboard side of the encoder via a sensor holder. The seals are mounted on the sensor holder and the inner ring, respectively, and are composed of annular first and second seal plates disposed opposite to each other.

このような回転速度検出装置付き車輪用軸受装置においては、センサホルダを車輪用軸受装置に取り付ける際に専用の圧入治具を用いている。より具体的には、センサホルダを構成する金属製の嵌合環を略Ｃ型をした圧入治具で押圧して外方部材に圧入固定している。ここで、圧入治具が略Ｃ型をしているのは、センサを保持する保持部が樹脂製であるため、その部分に圧力を加えないよう、円環状をした圧入治具の一部を切り欠いているためである。
特開２００５−３００２８９号公報 In such a wheel bearing device with a rotational speed detection device, a dedicated press-fitting jig is used when the sensor holder is attached to the wheel bearing device. More specifically, the metal fitting ring constituting the sensor holder is pressed and fixed to the outer member by pressing with a substantially C-shaped press-fitting jig. Here, the press-fitting jig is substantially C-shaped because the holding part for holding the sensor is made of resin, so that a part of the annular press-fitting jig is not applied to the part. This is because it is cut out.
Japanese Patent Laying-Open No. 2005-300289

しかしながら、嵌合環を略Ｃ型の圧入治具で圧入固定する際に、保持部が存在する部分の嵌合環には直接圧力が加えられないため、その部分の嵌合環が外方部材の端面と密着せず、エアギャップが不安定であったり、気密性不良に陥る可能性があるという課題があった。   However, when the fitting ring is press-fitted and fixed with a substantially C-type press-fitting jig, no pressure is directly applied to the fitting ring in the portion where the holding portion exists, so the fitting ring in that portion is the outer member. There is a problem that the air gap is not stable and the airtightness may be deteriorated.

本発明は、このような事情に鑑みてなされたもので、より精度の高いエアギャップ管理が可能となり、気密性不良を起こすことがなく、車輪の回転速度検出の信頼性を向上させることができる回転速度検出装置及び回転速度検出装置付き車輪用軸受装置を提供することを目的としている。   The present invention has been made in view of such circumstances, and more accurate air gap management is possible, without causing poor airtightness, and improving the reliability of wheel rotation speed detection. An object of the present invention is to provide a rotational speed detection device and a wheel bearing device with a rotational speed detection device.

係る目的を達成すべく、本発明は、エンコーダと、このエンコーダに対向するように配置される円環状のセンサホルダと、を備え、該センサホルダは、鋼板製で円環状をした嵌合環と、該嵌合環に一体モールドされ、前記エンコーダに対峙する回転速度センサを備える保持部とからなり、前記保持部の外周面の一部が略半円状に切り欠かれており、前記嵌合環の周面が露出している構成を採用した。   In order to achieve such an object, the present invention includes an encoder and an annular sensor holder disposed so as to face the encoder, and the sensor holder is an annular fitting ring made of a steel plate. The holding ring is integrally molded with the fitting ring and has a rotation speed sensor facing the encoder, and a part of the outer peripheral surface of the holding portion is cut out in a substantially semicircular shape. A configuration in which the peripheral surface of the ring is exposed was adopted.

このように、保持部の外周面の一部が略半円状に切り欠かれており、嵌合環の周面が露出しているので、嵌合環を車輪用軸受装置の外方部材に圧入固定する際に、嵌合環の内、保持器の設けられていない部分だけでなく、保持器の外周部も圧入治具で押圧することができる。したがって、嵌合環の略全周にわたって押圧量を一定とすることができる。これにより、より精度の高いエアギャップ管理が可能となり、気密性不良を起こすことがなく、車輪の回転速度検出の信頼性を向上させることができる。   In this way, a part of the outer peripheral surface of the holding portion is cut out in a substantially semicircular shape, and the peripheral surface of the fitting ring is exposed, so the fitting ring is used as an outer member of the wheel bearing device. When press-fitting and fixing, not only the portion of the fitting ring where the retainer is not provided, but also the outer peripheral portion of the retainer can be pressed by the press-fitting jig. Therefore, the pressing amount can be made constant over substantially the entire circumference of the fitting ring. As a result, air gap management with higher accuracy is possible, and the reliability of wheel rotation speed detection can be improved without causing poor airtightness.

また、本発明は、外周に懸架装置に取り付けるための車体取付フランジを一体に有し、内周に複列の外側転走面が形成された外方部材と、外周に車輪を取り付けるための車輪取付フランジを一体に有し、外周に軸方向に延びる円筒状の小径段部が形成されたハブ輪、およびこのハブ輪の小径段部に圧入された内輪または等速自在継手の外側継手部材とからなり、外周に前記複列の外側転走面に対向する内側転走面が形成された内方部材と、前記外方部材および内方部材のそれぞれの転走面間に転動自在に収容された複列の転動体と、前記内輪または等速自在継手の外側継手部材に外嵌されたエンコーダと、このエンコーダに対向するように前記外方部材の端部に装着された円環状のセンサホルダと、を備え、該センサホルダは、鋼板製で円環状をした嵌合環と、該嵌合環に一体モールドされ、前記エンコーダに対峙する回転速度センサを備える保持部とからなり、前記保持部の外周面の一部が略半円状に切り欠かれており、前記嵌合環の周面が露出していることができる。   The present invention also includes an outer member integrally having a vehicle body mounting flange for mounting on a suspension device on the outer periphery, a double row outer rolling surface formed on the inner periphery, and a wheel for mounting a wheel on the outer periphery. A hub ring integrally having a mounting flange and formed with a cylindrical small-diameter step portion extending in the axial direction on the outer periphery, and an outer joint member of an inner ring or a constant velocity universal joint press-fitted into the small-diameter step portion of the hub ring; An inner member formed on the outer periphery and formed with an inner rolling surface facing the outer rolling surface of the double row, and accommodated in a freely rollable manner between the respective rolling surfaces of the outer member and the inner member. A double-row rolling element, an encoder externally fitted to the outer ring member of the inner ring or constant velocity universal joint, and an annular sensor mounted on the end of the outer member so as to face the encoder A sensor holder, the sensor holder being made of a steel plate and a ring And a holding portion that is integrally molded with the fitting ring and has a rotational speed sensor facing the encoder, and a part of the outer peripheral surface of the holding portion is cut out in a substantially semicircular shape. The peripheral surface of the fitting ring can be exposed.

これにより、より精度の高いエアギャップ管理が可能となり、気密性不良を起こすことがなく、車輪の回転速度検出の信頼性を向上させることができる回転速度検出装置付き車輪用軸受装置を提供できる。   As a result, it is possible to provide a wheel bearing device with a rotation speed detection device that can perform air gap management with higher accuracy, does not cause airtightness, and can improve the reliability of wheel rotation speed detection.

本発明に係る回転速度検出装置付き車輪用軸受装置は、エンコーダと、このエンコーダに対向するように配置される円環状のセンサホルダと、を備え、該センサホルダは、鋼板製で円環状をした嵌合環と、該嵌合環に一体モールドされ、前記エンコーダに対峙する回転速度センサを備える保持部とからなり、前記保持部の外周面の一部が略半円状に切り欠かれており、前記嵌合環の周面が露出しているので、保持器の外周部も圧入治具で押圧することができ、より精度の高いエアギャップ管理が可能となり、気密性不良を起こすことがなく、車輪の回転速度検出の信頼性を向上させることができる。   A wheel bearing device with a rotational speed detection device according to the present invention includes an encoder and an annular sensor holder disposed so as to face the encoder, and the sensor holder is made of a steel plate and has an annular shape. It consists of a fitting ring and a holding part that is integrally molded with the fitting ring and has a rotation speed sensor facing the encoder, and a part of the outer peripheral surface of the holding part is cut out in a substantially semicircular shape. Since the peripheral surface of the fitting ring is exposed, the outer peripheral portion of the cage can also be pressed with a press-fitting jig, more accurate air gap management is possible, and no airtightness is caused. The reliability of wheel rotation speed detection can be improved.

エンコーダと、このエンコーダに対向するように配置される円環状のセンサホルダと、を備え、該センサホルダは、鋼板製で円環状をした嵌合環と、該嵌合環に一体モールドされ、前記エンコーダに対峙する回転速度センサを備える保持部とからなり、前記保持部の外周面の一部が略半円状に切り欠かれており、前記嵌合環の周面が露出している。   An encoder, and an annular sensor holder disposed so as to face the encoder, the sensor holder being made of a steel plate and having an annular shape, and being integrally molded with the fitting ring, The holding portion includes a rotation speed sensor facing the encoder, and a part of the outer peripheral surface of the holding portion is cut out in a substantially semicircular shape, and the peripheral surface of the fitting ring is exposed.

以下、本発明の実施の形態を図面に基づいて詳細に説明する。
図１は、本発明に係る回転速度検出装置付き車輪用軸受装置の実施形態を示す縦断面図、図２は、本発明に係る回転速度検出装置付き車輪用軸受装置の側面図、図３は、図１の要部拡大図である。なお、以下の説明では、車両に組み付けた状態で車両の外側寄りとなる側をアウトボード側（図面左側）、中央寄り側をインボード側（図面右側）という。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing an embodiment of a wheel bearing device with a rotational speed detection device according to the present invention, FIG. 2 is a side view of the wheel bearing device with a rotational speed detection device according to the present invention, and FIG. FIG. 2 is an enlarged view of a main part of FIG. In the following description, the side closer to the outer side of the vehicle when assembled to the vehicle is referred to as the outboard side (left side in the drawing), and the side closer to the center is referred to as the inboard side (right side in the drawing).

この回転速度検出装置付き車輪用軸受装置は駆動輪用であって、ハブ輪１と複列の転がり軸受２とをユニット化した、所謂第３世代と称される構成を備えている。   This wheel bearing device with a rotational speed detection device is for a drive wheel and has a so-called third generation configuration in which the hub wheel 1 and the double row rolling bearing 2 are unitized.

複列の転がり軸受２は、外方部材４と内方部材３と複列の転動体（ボール）５、５とを有し、外方部材４は、Ｓ５３Ｃ等の炭素０．４０〜０．８０ｗｔ％を含む中炭素鋼からなり、外周にナックル（図示せず）に取り付けるための車体取付フランジ４ｂを一体に有している。内周には複列の外側転走面４ａ、４ａが形成され、高周波焼入れによって表面硬さを５４〜６４ＨＲＣの範囲に硬化層が形成されている。   The double-row rolling bearing 2 includes an outer member 4, an inner member 3, and double-row rolling elements (balls) 5 and 5, and the outer member 4 has carbon 0.40 to 0. It is made of medium carbon steel containing 80 wt%, and integrally has a vehicle body mounting flange 4b for mounting to a knuckle (not shown) on the outer periphery. Double rows of outer rolling surfaces 4a and 4a are formed on the inner periphery, and a hardened layer is formed with a surface hardness in the range of 54 to 64 HRC by induction hardening.

一方、ハブ輪１は、アウトボード側の端部に車輪（図示せず）を取り付けるための車輪取付フランジ７を一体に有し、この車輪取付フランジ７の円周等配位置にハブボルト７ａが植設されている。また、外周には前記複列の外側転走面４ａ、４ａに対向する一方の内側転走面１ａと、この内側転走面１ａから軸方向に延びる円筒状の小径段部１ｂが形成されている。ハブ輪１の内周にはセレーション（またはスプライン）１ｃが形成され、等速自在継手を構成する外側継手部材（図示せず）がセレーション１ｃを介して内嵌される。内輪６はこの小径段部１ｂに圧入され、その外周に前記複列の外側転走面４ａ、４ａに対向する他方の内側転走面６ａが形成されている。ここで、内方部材３は、ハブ輪１と、このハブ輪１に圧入された内輪６を指している。   On the other hand, the hub wheel 1 integrally has a wheel mounting flange 7 for mounting a wheel (not shown) at an end portion on the outboard side, and a hub bolt 7a is planted at a circumferentially equidistant position of the wheel mounting flange 7. It is installed. Further, on the outer periphery, one inner rolling surface 1a facing the double row outer rolling surfaces 4a, 4a and a cylindrical small-diameter step portion 1b extending in the axial direction from the inner rolling surface 1a are formed. Yes. A serration (or spline) 1c is formed on the inner periphery of the hub wheel 1, and an outer joint member (not shown) constituting a constant velocity universal joint is fitted through the serration 1c. The inner ring 6 is press-fitted into the small-diameter step portion 1b, and the other inner rolling surface 6a facing the double-row outer rolling surfaces 4a and 4a is formed on the outer periphery thereof. Here, the inner member 3 refers to the hub wheel 1 and the inner ring 6 press-fitted into the hub wheel 1.

外方部材４の外側転走面４ａ、４ａと、これらに対向する複列の内側転走面１ａ、６ａ間には複列の転動体５、５がそれぞれ収容され、保持器９、９によって転動自在に保持されている。また、外方部材４の端部にはシール１０、１１が装着され、軸受内部に封入された潤滑グリースの漏洩と、外部から軸受内部に雨水やダスト等が侵入するのを防止している。なお、転動体５、５をボールとした玉軸受を例示したが、これに限らず転動体に円すいころを使用した円すいころ軸受であっても良い。   Double row rolling elements 5, 5 are accommodated between outer rolling surfaces 4a, 4a of outer member 4 and double row inner rolling surfaces 1a, 6a facing these, respectively, by retainers 9, 9. It is held freely rolling. Further, seals 10 and 11 are attached to the end portion of the outer member 4 to prevent leakage of the lubricating grease sealed inside the bearing and intrusion of rainwater, dust and the like into the bearing from the outside. In addition, although the ball bearing which used the rolling elements 5 and 5 as the ball | bowl was illustrated, it is not restricted to this, The tapered roller bearing which uses the tapered roller for the rolling element may be sufficient.

ハブ輪１は、Ｓ５３Ｃ等の炭素０．４０〜０．８０ｗｔ％を含む中炭素鋼からなり、アウトボード側のシール１０が摺接するシールランド部から内側転走面１ａおよび小径段部１ｂに亙って高周波焼入れによって表面硬さを５４〜６４ＨＲＣの範囲に硬化層が形成されている。これにより、車輪取付フランジ７の基部となるシールランド部は耐摩耗性が向上するばかりでなく、車輪取付フランジ７に負荷される回転曲げ荷重に対して充分な機械的強度を有し、ハブ輪１の耐久性が一層向上する。   The hub wheel 1 is made of medium carbon steel containing 0.40 to 0.80 wt% of carbon such as S53C, and the like from the seal land portion where the seal 10 on the outboard side is in sliding contact to the inner rolling surface 1a and the small diameter step portion 1b Thus, a hardened layer is formed with a surface hardness in the range of 54 to 64 HRC by induction hardening. As a result, the seal land that is the base of the wheel mounting flange 7 not only has improved wear resistance, but also has sufficient mechanical strength against the rotational bending load applied to the wheel mounting flange 7. The durability of 1 is further improved.

本実施形態では、図２、図３に示すように、円環状に形成されたセンサホルダ１５は外方部材４の端部に装着され、嵌合環１６と、この嵌合環１６に結合された樹脂製の保持部１７とからなる。   In this embodiment, as shown in FIGS. 2 and 3, the sensor holder 15 formed in an annular shape is attached to the end portion of the outer member 4, and is coupled to the fitting ring 16 and the fitting ring 16. And a resin-made holding portion 17.

嵌合環１６は、外方部材４の外周に圧入される円筒状の嵌合部１６ａと、この嵌合部１６ａから径方向内方に延びる鍔部１６ｂと、径方向内方に斜めに延びる傾斜部１６ｃと、この傾斜部１６ｃから軸方向に延びる円筒部１６ｄとからなり、全体が円環状に形成されている。この嵌合環１６は、耐食性を有するステンレス鋼板等をプレス加工にて形成されている。また、この傾斜部１６ｃの周方向複数箇所には穿孔１８が形成され、保持部１７が合成樹脂で一体モールド成形されている。そして、シール１１がセンサホルダ１５の円筒部１６ｄに内嵌されると共に、鍔部１６ｂを外方部材４の端面に密着させた状態で、センサホルダ１５が外方部材４の端部に圧入固定されている。   The fitting ring 16 has a cylindrical fitting portion 16a that is press-fitted into the outer periphery of the outer member 4, a flange portion 16b that extends radially inward from the fitting portion 16a, and an obliquely inward radial direction. The inclined portion 16c and a cylindrical portion 16d extending in the axial direction from the inclined portion 16c are formed in an annular shape as a whole. The fitting ring 16 is formed by pressing a corrosion-resistant stainless steel plate or the like. In addition, perforations 18 are formed at a plurality of locations in the circumferential direction of the inclined portion 16c, and the holding portion 17 is integrally molded with a synthetic resin. The sensor holder 15 is press-fitted and fixed to the end portion of the outer member 4 while the seal 11 is fitted in the cylindrical portion 16 d of the sensor holder 15 and the flange portion 16 b is in close contact with the end surface of the outer member 4. Has been.

保持部１７には、その内部に後述する磁気エンコーダ１９に所定の軸方向すきまを介して対峙する回転速度センサ２０が包埋されている。回転速度センサ２０は、ホール素子、磁気抵抗素子（ＭＲ素子）等、磁束の流れ方向に応じて特性を変化させる磁気検出素子と、この磁気検出素子の出力波形を整える波形成形回路が組み込まれたＩＣとからなる。   A rotation speed sensor 20 is embedded in the holding portion 17 so as to face a magnetic encoder 19 described later via a predetermined axial clearance. The rotation speed sensor 20 incorporates a magnetic detecting element such as a Hall element, a magnetoresistive element (MR element), etc. that changes its characteristics according to the flow direction of magnetic flux, and a waveform shaping circuit that adjusts the output waveform of the magnetic detecting element. It consists of IC.

本実施形態においては、保持部１７の外周面の略中央部分に略半円状に切り欠かれた切欠き部１４が形成されており、嵌合環１６の周面である鍔部１６ｂの一部が露出している。切欠き部１４の径方向の深さは、保持部１７の略中央部分にまで達しているが、保持部１７の強度は保たれている。   In the present embodiment, a cutout portion 14 that is cut out in a substantially semicircular shape is formed at a substantially central portion of the outer peripheral surface of the holding portion 17, and one of the flange portions 16 b that are the peripheral surface of the fitting ring 16. The part is exposed. The radial depth of the notch 14 reaches the substantially central portion of the holding portion 17, but the strength of the holding portion 17 is maintained.

図２には、この嵌合環１６を圧入治具で押圧する際の嵌合環１６と圧入治具との接触範囲がハッチングで示されている。この図に示すように、嵌合環１６の嵌合部１６ａを外方部材４に圧入固定する際に、嵌合環１６の鍔部１６ｂの内、保持部１７の設けられていない部分だけでなく、保持部１７の外周部の切欠き部１４によって露出した鍔部１６ｂの一部も圧入治具で押圧することができる。したがって、回転速度センサ２０のヘッドの真下の嵌合環を圧入治具で直接押し込めるので、嵌合環１６の略全周にわたって押圧量を一定とすることができる。これにより、外方部材４の端面と鍔部１６ｂとの間にすきまがなくなり、気密性不良を起こすことがなく、より精度の高いエアギャップ管理が可能となり、車輪の回転速度検出の信頼性を向上させることができる。   In FIG. 2, the contact range between the fitting ring 16 and the press-fitting jig when the fitting ring 16 is pressed by the press-fitting jig is shown by hatching. As shown in this figure, when the fitting portion 16a of the fitting ring 16 is press-fitted and fixed to the outer member 4, only the portion of the flange portion 16b of the fitting ring 16 where the holding portion 17 is not provided. In addition, a part of the flange portion 16b exposed by the notch portion 14 on the outer peripheral portion of the holding portion 17 can also be pressed by the press-fitting jig. Accordingly, since the fitting ring directly below the head of the rotation speed sensor 20 is directly pushed by the press-fitting jig, the pressing amount can be made constant over substantially the entire circumference of the fitting ring 16. As a result, there is no gap between the end face of the outer member 4 and the flange portion 16b, and no air-tightness is caused, more accurate air gap management is possible, and reliability of wheel rotation speed detection is improved. Can be improved.

インボード側のシール１１は、センサホルダ１５と内輪６にそれぞれ装着され、断面略Ｌ字状に形成された環状の第１および第２のシール板２１、２２からなり、互いに対向して配置されている。第２のシール板２２は、内輪６に外嵌される円筒部２２ａと、この円筒部２２ａから径方向外方に延びる立板部２２ｂとを有している。第２のシール板２２は、オーステナイト系ステンレス鋼鈑（ＪＩＳ規格のＳＵＳ３０４系等）、あるいは、防錆処理された冷間圧延鋼鈑（ＪＩＳ規格のＳＰＣＣ系等）をプレス加工にて形成されている。   The inboard side seal 11 is attached to the sensor holder 15 and the inner ring 6 respectively, and is composed of annular first and second seal plates 21 and 22 each having a substantially L-shaped cross section. ing. The second seal plate 22 includes a cylindrical portion 22a that is externally fitted to the inner ring 6, and a standing plate portion 22b that extends radially outward from the cylindrical portion 22a. The second seal plate 22 is formed by pressing an austenitic stainless steel plate (JIS standard SUS304 type or the like) or a rust-proof cold rolled steel plate (JIS standard SPCC type or the like). Yes.

一方、第１のシール板２１は、センサホルダ１５に内嵌される円筒部２１ａと、この円筒部２１ａの一端から径方向内方に延びる立板部２１ｂとからなり、サイドリップ２４ａとグリースリップ２４ｂおよび中間リップ２４ｃとを一体に有するシール部材２４が加硫接着されている。このシール部材２４はゴム等の弾性部材からなる。ここで、サイドリップ２４ａは第２のシール板２２の立板部２２ｂに摺接し、また、グリースリップ２４ｂおよび中間リップ２４ｃは第２のシール板２２の円筒部２２ａに摺接している。   On the other hand, the first seal plate 21 includes a cylindrical portion 21a fitted in the sensor holder 15 and a standing plate portion 21b extending radially inward from one end of the cylindrical portion 21a. A seal member 24 integrally having 24b and an intermediate lip 24c is vulcanized and bonded. The seal member 24 is made of an elastic member such as rubber. Here, the side lip 24 a is in sliding contact with the upright plate portion 22 b of the second seal plate 22, and the grease lip 24 b and the intermediate lip 24 c are in sliding contact with the cylindrical portion 22 a of the second seal plate 22.

センサホルダ１５の保持部１７を挟んでシール１１の反対側には鋼板製のベース２５が配設されている。このベース２５は、内輪６に外嵌される円筒部２５ａと、この円筒部２５ａから径方向外方に延びる立板部２５ｂからなり、断面略Ｌ字状に形成されている。そして、この立板部２５ｂのインボード側の面には、ゴム等のエラストマにフェライト等の磁性体粉が混入された磁気エンコーダ１９が一体に加硫接着されている。この磁気エンコーダ１９は、周方向に交互に磁極Ｎ、Ｓが着磁され、車輪回転速度の検出用のロータリエンコーダを構成している。   A steel plate base 25 is disposed on the opposite side of the seal 11 across the holding portion 17 of the sensor holder 15. The base 25 includes a cylindrical portion 25a that is externally fitted to the inner ring 6, and a standing plate portion 25b that extends radially outward from the cylindrical portion 25a, and has a substantially L-shaped cross section. A magnetic encoder 19 in which magnetic material powder such as ferrite is mixed into an elastomer such as rubber is integrally vulcanized and bonded to the surface on the inboard side of the standing plate portion 25b. This magnetic encoder 19 is magnetized with magnetic poles N and S alternately in the circumferential direction, and constitutes a rotary encoder for detecting wheel rotation speed.

このように、円環状のセンサホルダ１５に回転速度センサ２０が配設され、この回転速度センサ２０のインボード側にシール１１が内嵌されているので、自動車の完成品メーカの組立ラインへの搬送時を含む、ハブ輪１に外側継手部材１２を内嵌する以前の状態でも、また、過酷な環境となる実走時においても、磁気エンコーダ１９と回転速度センサ２０の検出部との間に外部から磁性粉末等の異物が侵入するのを確実に防止することができる。したがって、車輪の回転速度検出の信頼性を格段に向上させることができる。また、径方向のコンパクト化ができると共に、回転速度センサ２０等の取り巻きを簡素化でき、組立作業性が一段と向上する。   As described above, the rotational speed sensor 20 is disposed in the annular sensor holder 15, and the seal 11 is fitted on the inboard side of the rotational speed sensor 20, so that the assembly line of the finished product manufacturer of the automobile can be used. Even before the outer joint member 12 is fitted into the hub wheel 1 including during transportation, or even during actual running that is a harsh environment, the magnetic encoder 19 and the detection unit of the rotation speed sensor 20 are not connected. It is possible to reliably prevent foreign substances such as magnetic powder from entering from the outside. Therefore, the reliability of detecting the rotational speed of the wheel can be significantly improved. In addition, the radial direction can be reduced, the surroundings of the rotation speed sensor 20 and the like can be simplified, and the assembly workability is further improved.

なお、本実施形態では、回転速度検出装置として、磁気エンコーダ１９と、ホール素子等の磁気検出素子からなる回転速度センサ２０とからなるアクティブタイプの回転速度検出装置を例示したが、本発明に係る回転速度検出装置はこれに限らず、例えば、磁気エンコーダと、磁石と巻回された環状のコイル等からなるパッシブタイプであっても良い。また、検出方向は、ラジアル、アキシアルのいずれにも適用可能である。   In the present embodiment, as an example of the rotational speed detection apparatus, an active type rotational speed detection apparatus including the magnetic encoder 19 and the rotational speed sensor 20 including a magnetic detection element such as a Hall element is illustrated. The rotational speed detection device is not limited to this, and may be, for example, a passive type composed of a magnetic encoder, a magnet, and an annular coil wound around. The detection direction can be applied to either radial or axial.

以上、本発明の実施の形態について説明を行ったが、本発明はこうした実施の形態に何等限定されるものではなく、あくまで例示であって、本発明の要旨を逸脱しない範囲内において、さらに種々なる形態で実施し得ることは勿論のことであり、本発明の範囲は、特許請求の範囲の記載によって示され、さらに特許請求の範囲に記載の均等の意味、および範囲内のすべての変更を含む。   The embodiment of the present invention has been described above, but the present invention is not limited to such an embodiment, and is merely an example, and various modifications can be made without departing from the scope of the present invention. Of course, the scope of the present invention is indicated by the description of the scope of claims, and further, the equivalent meanings described in the scope of claims and all modifications within the scope of the scope of the present invention are included. Including.

本発明に係る回転速度検出装置付き車輪用軸受装置は、内輪回転構造においてあらゆるタイプの回転速度検出装置が内蔵された車輪用軸受装置に適用することができる。   The wheel bearing device with a rotation speed detection device according to the present invention can be applied to a wheel bearing device in which any type of rotation speed detection device is built in the inner ring rotation structure.

本発明に係る回転速度検出装置付き車輪用軸受装置の実施形態を示す縦断面図である。It is a longitudinal cross-sectional view which shows embodiment of the wheel bearing apparatus with a rotational speed detection apparatus which concerns on this invention. 本発明に係る回転速度検出装置付き車輪用軸受装置の側面図である。It is a side view of the wheel bearing device with a rotational speed detection device according to the present invention. 図１の要部拡大図である。It is a principal part enlarged view of FIG.

符号の説明Explanation of symbols

１・・・・・・・・・・・・・・・・・・・・ハブ輪
１ａ、６ａ・・・・・・・・・・・・・・・・内側転走面
１ｂ・・・・・・・・・・・・・・・・・・・小径段部
１ｃ・・・・・・・・・・・・・・・・・・・セレーション
２・・・・・・・・・・・・・・・・・・・・複列の転がり軸受
３・・・・・・・・・・・・・・・・・・・・内方部材
４・・・・・・・・・・・・・・・・・・・・外方部材
４ａ・・・・・・・・・・・・・・・・・・・外側転走面
４ｂ・・・・・・・・・・・・・・・・・・・車体取付フランジ
５・・・・・・・・・・・・・・・・・・・・転動体
６・・・・・・・・・・・・・・・・・・・・内輪
７・・・・・・・・・・・・・・・・・・・・車輪取付フランジ
７ａ・・・・・・・・・・・・・・・・・・・ハブボルト
９・・・・・・・・・・・・・・・・・・・・保持器
１０・・・・・・・・・・・・・・・・・・・アウトボード側のシール
１１・・・・・・・・・・・・・・・・・・・インボード側のシール
１４・・・・・・・・・・・・・・・・・・・切欠き部
１５・・・・・・・・・・・・・・・・・・・センサホルダ
１６・・・・・・・・・・・・・・・・・・・嵌合環
１６ａ・・・・・・・・・・・・・・・・・・嵌合部
１６ｂ・・・・・・・・・・・・・・・・・・鍔部
１６ｃ・・・・・・・・・・・・・・・・・・傾斜部
１６ｄ・・・・・・・・・・・・・・・・・・円筒部
１７・・・・・・・・・・・・・・・・・・・保持部
１８・・・・・・・・・・・・・・・・・・・穿孔
１９・・・・・・・・・・・・・・・・・・・磁気エンコーダ
２０・・・・・・・・・・・・・・・・・・・回転速度センサ
２１・・・・・・・・・・・・・・・・・・・第１のシール板
２１ａ・・・・・・・・・・・・・・・・・・円筒部
２１ｂ・・・・・・・・・・・・・・・・・・立板部
２２・・・・・・・・・・・・・・・・・・・第２のシール板
２２ａ・・・・・・・・・・・・・・・・・・円筒部
２２ｂ・・・・・・・・・・・・・・・・・・立板部
２４・・・・・・・・・・・・・・・・・・・シール部材
２４ａ・・・・・・・・・・・・・・・・・・サイドリップ
２４ｂ・・・・・・・・・・・・・・・・・・グリースリップ
２４ｃ・・・・・・・・・・・・・・・・・・中間リップ
２５・・・・・・・・・・・・・・・・・・・ベース
２５ａ・・・・・・・・・・・・・・・・・・円筒部
２５ｂ・・・・・・・・・・・・・・・・・・立板部 1 ... hub wheel 1a, 6a ... inner rolling surface 1b ... ·············· Small diameter step 1c ·········· Double row rolling bearing 3・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Outer member 4a ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Outer rolling surface 4b ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・... Body mounting flange 5 ... Rolling element 6 ...・ ・ ・ ・ ・ Inner ring 7 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Wheel mounting flange 7a ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・9 Bolt 9 ... Retainer 10 ... Outboard side seal 11 ························ Seal 14 on the inboard side ... ..... Sensor holder 16 ..... Fitting ring 16a ... ·········· Fitting portion 16b ····································· ..... inclined part 16d ........... cylindrical part 17 ........... holding part 18・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Perforation 19 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Magnetic Encoder 20... Rotational speed sensor 21...・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Cylindrical part 21b ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Vertical plate part 22 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Second seal plate 22a ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Cylindrical portion 22b ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・···················································· Sealing member 24a・ Side lip 24b ・ ・ ・ ・ ・ ・ ・ ・ Grease lip 24c ・ ・ ・ ・ ・ ・ ・ ・ Intermediate lip 25 ・ ・ ・ ・・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Base 25a ・ ・ ・ ・ ・ ・ ・ ・ ・ ・... Cylindrical part 25b ...

Claims (2)

エンコーダと、このエンコーダに対向するように配置される円環状のセンサホルダと、を備え、
該センサホルダは、鋼板製で円環状をした嵌合環と、該嵌合環に一体モールドされ、前記エンコーダに対峙する回転速度センサを備える保持部とからなり、
前記保持部の外周面の一部が略半円状に切り欠かれており、前記嵌合環の周面が露出していることを特徴とする回転速度検出装置。 An encoder and an annular sensor holder disposed to face the encoder;
The sensor holder is made of a steel ring-shaped fitting ring, and a holding unit that is integrally molded with the fitting ring and includes a rotation speed sensor that faces the encoder.
A part of the outer peripheral surface of the holding part is cut out in a substantially semicircular shape, and the peripheral surface of the fitting ring is exposed. 外周に懸架装置に取り付けるための車体取付フランジを一体に有し、内周に複列の外側転走面が形成された外方部材と、
外周に車輪を取り付けるための車輪取付フランジを一体に有し、外周に軸方向に延びる円筒状の小径段部が形成されたハブ輪、およびこのハブ輪の小径段部に圧入された内輪または等速自在継手の外側継手部材とからなり、外周に前記複列の外側転走面に対向する内側転走面が形成された内方部材と、
前記外方部材および内方部材のそれぞれの転走面間に転動自在に収容された複列の転動体と、
前記内輪または等速自在継手の外側継手部材に外嵌されたエンコーダと、このエンコーダに対向するように前記外方部材の端部に装着された円環状のセンサホルダと、を備え、
該センサホルダは、鋼板製で円環状をした嵌合環と、該嵌合環に一体モールドされ、前記エンコーダに対峙する回転速度センサを備える保持部とからなり、
前記保持部の外周面の一部が略半円状に切り欠かれており、前記嵌合環の周面が露出していることを特徴とする回転速度検出装置付き車輪用軸受装置。 An outer member integrally having a vehicle body mounting flange for mounting to a suspension device on the outer periphery, and a double row outer rolling surface formed on the inner periphery;
A hub wheel integrally having a wheel mounting flange for mounting a wheel on the outer periphery and having a cylindrical small-diameter step portion extending in the axial direction on the outer periphery, and an inner ring or the like press-fitted into the small-diameter step portion of the hub wheel An inner member formed of an outer joint member of a speed universal joint and having an inner rolling surface facing the outer rolling surface of the double row on the outer periphery;
A double row rolling element housed so as to be freely rollable between the rolling surfaces of the outer member and the inner member;
An encoder externally fitted to the outer ring member of the inner ring or constant velocity universal joint, and an annular sensor holder attached to the end of the outer member so as to face the encoder,
The sensor holder is made of a steel ring-shaped fitting ring, and a holding unit that is integrally molded with the fitting ring and includes a rotation speed sensor that faces the encoder.
A wheel bearing device with a rotational speed detecting device, wherein a part of the outer peripheral surface of the holding portion is cut out in a substantially semicircular shape, and the peripheral surface of the fitting ring is exposed.
JP2006342203A 2006-12-20 2006-12-20 Rotation speed detector and wheel bearing device with the detector Pending JP2008151727A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2006342203A JP2008151727A (en) 2006-12-20 2006-12-20 Rotation speed detector and wheel bearing device with the detector
CNA2007800470452A CN101589312A (en) 2006-12-20 2007-12-18 Rotation speed detection device and bearing device having rotation speed detection device and adapted for use for wheel
PCT/JP2007/001423 WO2008075464A1 (en) 2006-12-20 2007-12-18 Rotation speed detection device and bearing device having rotation speed detection device and adapted for use for wheel
DE112007003123T DE112007003123T5 (en) 2006-12-20 2007-12-18 Wheel speed detecting device with a wheel speed detecting device united wheel bearing device
US12/486,883 US7737682B2 (en) 2006-12-20 2009-06-18 Wheel speed detecting apparatus and a wheel bearing apparatus incorporated with a wheel speed detecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006342203A JP2008151727A (en) 2006-12-20 2006-12-20 Rotation speed detector and wheel bearing device with the detector

Publications (1)

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JP2008151727A true JP2008151727A (en) 2008-07-03

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JP (1) JP2008151727A (en)
CN (1) CN101589312A (en)
DE (1) DE112007003123T5 (en)
WO (1) WO2008075464A1 (en)

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JP2010151311A (en) * 2008-11-28 2010-07-08 Jtekt Corp Rolling bearing device for wheel
US8514400B2 (en) 2010-03-23 2013-08-20 Oewaves, Inc. Optical gyroscope sensors based on optical whispering gallery mode resonators
EP2664927B1 (en) * 2012-05-14 2018-03-28 Aktiebolaget SKF Temporary support member for a sensor unit of a bearing, sensing sub-assembly and bearing assembly comprising such a support member
JP6490995B2 (en) * 2015-03-12 2019-03-27 Ntn株式会社 Wheel bearing device with rotation speed detector
JP6431466B2 (en) * 2015-11-16 2018-11-28 日本精機株式会社 Rotation detector
DE102022106014A1 (en) * 2022-03-15 2023-09-21 Schaeffler Technologies AG & Co. KG Double row axial angular contact ball bearing

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GB2303214B (en) * 1995-07-07 1998-01-21 Nsk Ltd Rolling bearing unit with rotary speed sensor
US7282908B2 (en) * 2002-06-17 2007-10-16 Skf Industrie S.P.A. Surveying device for the running parameters of railway bearings
JP4375790B2 (en) 2004-04-09 2009-12-02 Ｎｔｎ株式会社 Wheel bearing device with rotation speed detector
US7618194B2 (en) 2004-04-09 2009-11-17 Ntn Corporation Wheel bearing apparatus incorporated with a wheel speed detecting apparatus
JP4771357B2 (en) * 2005-02-15 2011-09-14 Ｎｔｎ株式会社 Method for assembling wheel bearing device with rotational speed detection device
JP2006226729A (en) * 2005-02-15 2006-08-31 Denso Corp Pointer meter
JP4679192B2 (en) 2005-03-22 2011-04-27 Ｎｔｎ株式会社 Wheel bearing device with rotation speed detector

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US7737682B2 (en) 2010-06-15
WO2008075464A1 (en) 2008-06-26
US20090256550A1 (en) 2009-10-15
DE112007003123T5 (en) 2009-11-05

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